Motorcycle disk-brake lock

ABSTRACT

A motorcycle disk-brake lock which makes it highly unlikely or prevents normal operation of the motorcycle while the lock is engaged with a disk-brake of the motorcycle and to thereby provide a clear alert to an operator thereof, and which can be conveniently stored and transported when not in use as a disk-brake lock.

FIELD OF THE INVENTION

The present invention relates to a motorcycle disk-brake lock, and moreparticularly to a disk-brake lock which provides a clear indication to auser thereof that the lock is engaged with the disk-brake, to therebyprevent an offhand attempt to drive the motorcycle while the lock isengaged with the disk-brake.

BACKGROUND OF THE INVENTION

Various anti-theft devices for motorcycles have been suggested along theyears. The simplest security device is a large chain, which can belooped through one of the wheels and/or a portion of the frame(interchangeably referred to also as chassis), and often also securedaround a suitable stationary object such as a tree or lamp post. Thechain must be sufficiently long, making it cumbersome to store andcarry.

Other anti-theft arrangements for motorcycles are alarm systems with orwithout immobilizing systems, GPS assisted tracking systems, etc.

Alternatively, a disk-brake lock may be used. This is a lock, such asthat described in U.S. Pat. Nos. 5,265,451 to Phifer and 5,492,206 toShieh, which is secured through one of the holes formed in the diskportion of a disk-brake, preventing rotation of the motorcycle wheel.This is a highly effective anti-theft device, but has two maindisadvantages:

A. It is possible for the motorcycle to attempt traveling a very shortdistance with the lock in place. This may occur when the owner of themotorcycle forgets that the lock is engaged, or during an attempted oftheft by a potential thief or even an un-aware authorized user. Theoperator then starts the motorcycle, shifts into first gear and startsto roll. The wheel will be able to rotate until the disk-brake lockcomes into contact with the brake caliper or some other part of themotorcycle, upon which the wheel will abruptly stop rotating.

This would likely cause the motorcycle to fall over, possibly over therider, or cause the driver to be thrown from the motorcycle and injuredand likely cause damage to various parts of the motorcycle, e.g. damagethe disk-brake, necessitating extremely expensive repair work.

Devices intended to warn an operator that a locking device is attachedto the motorcycle are known, including U.S. Pat. No. 6,230,530 to Voigtet al. However, in moments of stress or when hurrying, the operator maynot notice the warning device or even a warning signal. An ideal lockreminder device would therefore preclude operation of the motorcyclewhile the lock is engaged. A device aimed at fulfilling this purpose isdescribed by Titterton in U.S. Pat. No. 6,178,787. However, this doesnot solve the second problem associated with disk-brake locks, asdescribed below.

B. Disk-brake locks are very heavy and bulky and are therefore difficultto transport when the motorcycle is in use, and therefore a suitablestorage location is required for this particular style of locks. Adisk-brake lock is commonly stored in a pouch or storage bin attached tothe chassis of the motorcycle, in the helmet compartment, or similarstorage devices, which are extremely inconvenient, or are carried by theoperator.

As described in U.S. Pat. No. 4,436,232 to Zane et al., a lock holderhas been devised for fastening to the frame of a motorcycle for carryinga motorcycle lock. This comprises a mounting unit for fixing to theframe of a motorcycle and a carrier unit at one side of the mountingunit for carrying a motor lock. However, the lock holder may be heavilyvibrated when the motorcycle runs over an uneven road, causing the lockto fall out of the holder. Further lock holders include that describedby Lu in U.S. Pat. No. 5,662,255.

U.S. Pat. No. 6,131,427 to Webber et al. describes a footpeg whichserves also as a lock holder for a motorcycle, in which the disk lockmay be carried by attachment to the footpeg. However, this does notprevent operation of the motorcycle when the lock is engaged and doesnot provide a significant reminder for the operator to remove thedisk-brake lock.

Therefore it is an object of the present invention to provide amotorcycle disk-brake lock which makes it highly unlikely or preventsnormal operation of the motorcycle while the lock is engaged to thedisk-brake and to thereby provide a clear alert to an operator thereof,and which can be conveniently stored and transported when not in use asa disk-brake lock. Even more so, an attempt to brake the lock may resultin irreversible damage thereto such that it may no longer servefunctionally, thus prevent operating the motorcycle.

SUMMARY OF THE INVENTION

Accordingly, it is an object of the present invention to overcome thedisadvantages of the prior art and provide a disk-brake lock which whenin use as a lock prevents a motorcycle from being operated in the normalmanner, and when not in use as a lock may be easily and convenientlycarried on the motorcycle.

The present invention, according to its broad aspect, is directed to adisk-brake lock for a motorcycle, which lock is a functional componentof the motorcycle, such that it is unlikely to start and roll themotorcycle before disengaging the lock from the disk-brake andreengaging it at another location of the motorcycle for performing itsfunction essential for starting or driving the motorcycle.

The term functional component as used herein the specification andclaims denotes any component of the motorcycle required for starting ordriving it, such as, for example a footrest peg, a foot-brake paddle, agear shift peg, a hand-grip, a hand-gas grip etc. Preferably, saidfunctional component is an essential component, i.e. starting or ridingthe motorcycle is highly unlikely or not possible at all. Typically, afunctional component functions and resembles in appearance aconventional corresponding component.

In accordance with an embodiment of the present invention, there isprovided a disk-brake lock for a motorcycle comprising a U-like shapedlock member defining a gap sized to receive a wheel disk-brake, alocking unit for removably attaching the lock member to a mounting unitat a functional location of the motorcycle and for locking engagementwith the disk-brake. The arrangement is such that the locking unit ofsaid lock member is attachable to said mounting unit for use as afunctional component of the motorcycle and, when removed from saidmounting unit, may be used as a wheel disk-brake lock.

It is thus possible to provide a motorcycle wherein more than onelocking mechanism is provided, e.g. a first element useful as a U-likeshaped lock for lockingly embracing the disk-brake (for example thedisk-brake of the front wheel), and a second element useful as a lockingpin (king-pin type lock) useful for locking engagement with the rearwheel of the motorcycle.

According to a different embodiment, the disk-brake lock is a pin-typelock (at times referred to as a king-pin lock) fitted for lockingengagement into a hole of the disk-brake, and attachable to a mountingunit of the motorcycle in the same manner. A lock of this type may beeasily fitted on either a front or a rear disk-brake of a motorcycle.

According to one embodiment of the invention, the lock member isfunctional as a footpeg (also referred to as a footrest) or paddle andaccording to another embodiment the lock member is functional as a handgrip.

According to still an embodiment of the present invention, the lockingunit comprises an integral alarm system which generates an audible alarmsignal upon displacement, while engaged with the disk-brake. By afurther modification, the locking unit functions as an electronicimmobilizer cooperating in conjunction with the mounting unit, such thatthe motorcycle can not be started without said locking unit. Accordingto one particular application, an alarm/alert system is activated uponan attempt to start the motorcycle when the locking unit is disengagedfrom the mounting unit.

An advantage of the present invention is that the operator is instantlyand automatically reminded that the lock is still engaged whenattempting to operate the motorcycle.

A further advantage of the present invention is that a solution isprovided for transport and placing of the lock when not in use as alock.

According to another aspect of the invention, there is provided amotorcycle fitted with a functional component detachably connectable toa mounting unit of the motorcycle for cooperation therewith at anoperative position of the motorcycle, and fitted for locking engagementto a disk-brake of the motorcycle to serve as a disk-brake lock; suchthat it is unlikely to start and roll the motorcycle before disengagingthe lock from the disk-brake and re-engaging it to the mounting unit ofthe motorcycle for performing its function. Additional features andadvantages of the invention will become apparent from the followingdrawings and description.

BRIEF DESCRIPTION OF THE DRAWINGS

For a better understanding of the invention and to see how it may becarried out in practice, some embodiments will now be described, by wayof non-limiting examples only, with reference to the accompanyingdrawings, in which:

FIG. 1 is a top left isometric view of a motorcycle fitted with adisk-brake lock according to the present invention;

FIG. 2 is an enlargement of the portion marked II in FIG. 1,illustrating the footpeg and gear-shift paddle zone;

FIG. 3A shows the use of a key to remove a multi-purpose disk-brakelock/footpeg from a connector unit on which it is mounted in the footpegconfiguration, according to a first embodiment thereof;

FIG. 3B shows the footpeg mounting adapter upon removal of thedisk-brake lock/footpeg;

FIG. 3C shows a portion of a disk-brake with the disk-brake lock/footpegin use as a motorcycle disk-brake lock;

FIG. 4 is an isometric view of the dual-function disk-brake lock/footpegof FIGS. 3 isolated from the motorcycle;

FIG. 5A is an enlargement of the portion marked V in FIG. 1,illustrating a hand-grip useful also as a disk-brake lock, according toanother embodiment of the present invention;

FIG. 5B is an exploded view showing the disk-brake lock/hand-grip andthe hand-grip mounting adapter;

FIG. 5C shows a portion of a disk-brake fitted with the disk-brakelock/hand-grip in use as a motorcycle disk-brake lock;

FIG. 6A shows a gear-shift paddle useful also as a disk-brake lock,according to still another embodiment of the present invention;

FIG. 6B shows a portion of a disk-brake fitted with the disk-brakelock/gear-shift paddle in use as a motorcycle disk-brake lock;

FIG. 6C shows the gear-shift paddle mounting adapter upon removal of thedisk-brake lock/gear-shift paddle;

FIG. 7A shows a footpeg useful as disk-brake according to a furtherembodiment of the invention; and

FIG. 7B shows the disk-brake of FIG. 7A lockingly mounted on adisk-brake of a rear wheel of a motorcycle;

FIG. 8A is an isometric view of a foot rest/disk-brake lock according toan embodiment of the invention, detached from a corresponding mountingunit;

FIG. 8B is a schematic sectioned representation illustrating the footrest/disk-brake lock of FIG. 8A lockingly engaged to the mounting unit;and

FIG. 8C is the same as FIG. 8B, illustrating the foot rest/disk-brakelock detached from the mounting unit.

DETAILED DESCRIPTION OF THE INVENTION

Attention is first directed to FIG. 1 showing a motorcycle generallydesignated 10 and fitted with a footpeg 14 (also known as a foot rest)on which a motorcycle rider rests his left foot during the operation ofthe motorcycle and a gear shift paddle 18, operable by the users leftfoot. Another footpeg is provided at the right side of the motorcycle,serving to rest/support the right foot which typically operates the rearbrake pedal (not seen in FIG. 1). The footpeg 14 is a simple device,extending essentially horizontally perpendicular to the body of themotorcycle, which in some instances may be collapsible.

The front wheel assembly 20 of the motorcycle 10 is fitted with adisk-brake assembly 22 comprising a hydraulic caliper system 24 and abraking disk (disk-brake) 26, wherein braking occurs upon squeezing ahand-brake lever (not seen) whilst gripping a hand-grip (also not seenin FIG. 1), resulting in clamping of the calipers about the braking disk26, as known per se.

As can better be seen in the enlargement FIGS. 2 to 7, each of thefootpeg 14, the paddle portion of gear shift paddle 18 and bothhand-grips, comprises a metal core (not clearly seen in some of theFigs.) provided with an outer layer of rubber or similar non-slipmaterial to prevent the operator's foot or hand, respectively, fromslipping off the peg or paddle or improving the hand grip, as may be thecase. In some cases, a footpeg is provided (not shown) at a bottom outerend with a ground ‘sensor’ which is a downwardly projecting pin usefulfor indicating to the rider the extent of inclination of the motorcycle,when riding in a curb.

With further reference being made now to FIGS. 2 and 3A to 3C, there isillustrated a first embodiment of a disk-brake lock according to theinvention, where the footpeg 14 is removably attached to the motorcyclevia a mounting unit 42 (best seen in FIG. 3B) and fastened thereto bypin-lock mechanism 46. A through-hole 50 (seen in FIG. 4) is formed infootpeg 14, such that it may be attached to mounting unit 42 byinsertion of the pin-lock mechanism 46 there through. Mounting unit 42is itself fixedly attached to the motorcycle by a bolt or other standardconnecting device or being welded thereto. Pin-lock mechanism 46 islocked and unlocked by appropriate rotation of a key 48 (FIG. 3A) inorder for footpeg 14 to be attached to or removed from mounting unit 42.The overall appearance of the footpeg 14 is the same as a conventionalfootpeg and its functionality is not effected. Preferably, some coveringmeans is provided (not shown) for covering the key-hole of the pin-lockmechanism to thereby protect the locking mechanism from ingress of dirt,mud, water, etc.

It is appreciated that according to an embodiment of the invention, themounting unit 42 may be attached to the motorcycle also in retrofit,i.e. after the motorcycle has left the factory.

As can be seen in the Figures, and best in FIG. 4, the dual-functiondisk-brake lock/footpeg 14 comprises a substantially U-like shaped metalbody 54 having a rubber anti-slip layer 56 along its upper surface andouter edge. The region between the two parallel sides of the ‘U’ forms adisk receiving slot 60.

In FIG. 2 the disk-brake lock/footpeg 14 is seen in its footpegconfiguration functional to support the left foot of the motorcyclerider. In FIG. 3A the pin-lock mechanism 46 is unlocked to enabledetachment of the footpeg 14 from the mounting unit 42, as seen in FIG.3B. This position in itself makes it rather uncomfortable or impossibleto ride the motorcycle as the rider will encounter difficulties inshifting gears by means of gear-shift paddle 18.

FIG. 3B shows mounting unit 42 upon removal of disk-brake lock/footpeg14. Mounting unit 42 comprises a body section 62 fitted with aprojecting member 64, formed with a central through-hole 66 forinsertion of a locking pin of the pin-lock mechanism 46. At theassembled position of the footpeg 14 over the mounting unit 42, the footpeg is steady and provides firm support. However, according to someembodiments, the footpeg may be foldable about the mounting unit.

Referring now to FIG. 3C, the disk-brake lock/footpeg 14 is shown in useas a disk bake lock. The disk-brake lock/footpeg 14 is mounted on themotorcycle disk-brake 26 such that the disk receiving slot 60 (best seenin FIG. 4) embraces the disk-brake, and then the footpeg/disk-brake lock14 is locked in place by means of the pin-lock mechanism 46. Themotorcycle disk-brake lock/footpeg of the present invention provides adisk-brake lock for use as an anti-theft device, such that themotorcycle cannot be operated with the disk-brake lock engaged, wherebythe wheel of the motorcycle is unable to complete a full revolution.

Further attention is now directed to FIGS. 5A to 5C illustrating afurther embodiment of a disk-brake lock in accordance with the presentinvention where a handgrip generally designated 70 (FIG. 5A) isdetachably connected to the handlebar assembly 74 by means of a mountingunit 76 (FIG. 5B). The handgrip 70 is a generally round member having asolid metal core 78 and is coated with a suitable rubber 82 foreffective and pleasing hand-gripping. The handgrip 70 is formed with adisk-receiving slot 86 sized to accommodate the disk-brake 26.

The handgrip 70 is detachable from the mounting unit 76 by a lockingmechanism 88 which by means of a key 90 may be locked and firmlyattached to the mounting unit 76 by a locking pin 91, or unlocked toremove the handgrip 70 so it can facilitate as a disk-brake lock, inFIG. 5C. When the handgrip 70 is mounted on the disk-brake 26 it islocked in position by same locking mechanism 88 and correspondinglocking pin 91. An example of a locking mechanism suitable for thatpurpose is illustrated with reference to FIGS. 8B and 8C.

In order to prevent rotational displacement of the hand grip 70 withrespect to the handlebar assembly 74, the mounting unit 76 is formedwith a hole 79 engageable by the corresponding locking pin 91 of thehandgrip, so as to ensure correct relative positioning and to preventsaid rotational displacement there between.

According to a particular embodiment, the hand grip is an assemblywherein the span of the disk-receiving slot is variable between aconstricted position when attached to the mounting unit, and an expandedposition for locking engagement with a disk-brake. Accordingly, whileattached to the mounting unit 76, the slot 86 is constricted where it ispractically not noticeable (FIG. 5A), and when it is detached from themounting unit 76 the slot 86 spontaneously expands (FIGS. 5B and 5C) toa size suited for accommodation of the disk-brake. This arrangement isfacilitated by means of the locking mechanism 88 and a loaded spring(not shown).

The arrangement is such that when the handgrip 70 is in use as adisk-brake lock (FIG. 5C) it is absent from the handlebar assembly 74(FIG. 5B) and therefore, when an operator wishes to prepare for drivingthe motorcycle, he will immediately notice that the handgrip is missingand will thus become aware that the disk-brake lock is still engaged.Further, the operator will not be able to shift the motorcycle into gearand it is thus unlikely that the machine can be driven.

Turning now to FIGS. 6A-6C, there is illustrated still a differentembodiment wherein a gear-shift pedal 93 is dual-function and serves asa gear-shift pedal (FIG. 6A) and as a disk-brake lock (FIG. 6B). Thegear-shift pedal 93 comprises a disk-brake receiving slot 95 and aconnecting portion 94 (FIG. 6A) for lockingly mounting over aconnecting/mounting unit 96 (FIG. 6C) by means of a locking mechanism 98and an appropriate key 100. Connecting/mounting unit 96 has a hexagonalcross-section (FIG. 6C) snugly receivable within a correspondingreceptacle formed at the gear-shift pedal 93 (not seen) to thereby fixthe relative angular position there between.

In its function as a gear-shift pedal 93 (FIG. 6A) the device is tightlysecured to the mounting unit 96 to avoid relative displacement betweenthe gear-shift pedal 93 and the mounting unit 96 whereby gear shiftingby said pedal is not effected.

In its function as a disk-brake lock, the gear-shift pedal 93 is securedover the disk-brake 26 and is locked in place by means of the lockingmechanism 98, as in FIG. 6B. A protective cap or cover may be fittedover the locking mechanism 98, for the reasons mentioned hereinabove.

It is appreciated that in its function as a disk-brake lock, thegear-shift pedal 93 is absent from its originally intended position as agear-shift pedal (FIG. 6A) whereupon the motorcycle cannot be operatedand whereby the motorcycle rider will become aware of the fact that thedisk-brake lock is engaged with the disk-brake instantaneously uponsitting on the motorcycle.

The embodiment of FIGS. 7A and 7B illustrates still a modification ofthe invention wherein a footpeg (also referred to as a foot rest) 106 isa dual-function device serving as a footpeg in FIG. 7A to facilitategear shifting, and serving as a king-pin type disk-brake lock (FIG. 7B),for lockingly engaging within one of the plurality of holes 108 formedin a conventional disk-brake 26 (on either a front or rear disk-brake ofthe motorcycle).

The footpeg 106 is lockingly mounted to a corresponding mounting unit110 and is lockingly attached or detached therefrom by means of thelocking mechanism 112 of the king-pin. By the same king-pin and lockingmechanism the footpeg 100 is lockingly engaged to the disk-brake (a rearwheel of the motorcycle in the present example), as in FIG. 7B.According to some other embodiments (not shown) rather or in addition tousing the footpeg 106, one could also use the gear-shift paddle, ahand-grip, etc.

Similar to the arrangement of the previous embodiments, also in theembodiment depicted in FIGS. 7A and 7B, the disk-brake lock/footpegserves as an anti-theft device such that the motorcycle cannot beoperated with the disk-brake lock engaged on the one hand, whilst, onthe other hand, an attempt to operate the motorcycle with the disk-brakelock 106 engaged, will immediately alert the operator who will becomeaware that the disk-brake lock is still engaged.

Further attention is now directed to FIGS. 8A-8C of the drawingsillustrating a particular embodiment of a footrest-disk-brake lock inaccordance with a modification of the present invention. The footrestgenerally designated 120 has an overall shape similar to footpeg 14 asillustrated in FIG. 4, and comprises a body portion 122 formed with adisk-receiving slot 126 sized and shaped for alternate lockingengagement with a connector 127 of a mounting unit 130 (similar tomounting unit 62 in FIG. 3B) and for locking engagement in an embracingmanner over a disk-brake as explained in connection with the embodimentsof FIGS. 2 to 4.

The footpeg 120 further comprises a locking pin 134 spring biased by acoil-spring 136 into its retracted position as in FIGS. 8A and 8C,though prevented from removal e.g. by a restricting pin (not seen), soas to prevent losing the pin 134 and the associated spring 136. Pin 134serves for locking engagement of the footpeg 120 by penetration intohole 128 (FIG. 5A) of mounting unit 130 and for locking embracement overa brake-disk.

Locking pin 134 is controlled by an axially displaceable locking rod146, fitted for arresting the locking pin 134 by engagement with acorresponding notch 150 formed at an end of the locking pin 134 (FIGS.8B and 8C). By means of a coiled spring 148 is biased to retract fromthe notch 150. Locking rod 146 is manipulable by means of a lockingmechanism 160 which by a removable key 164 propels the locking pin 146into locking engagement with notch 150 Of the locking pin 134 (FIG. 8B),to facilitate its locking engagement with a mounting unit 130 orembracingly over a disk-brake (not shown). Unlocking the lock mechanism160 permits the locking rod 146 to spontaneously retract into its openposition (FIG. 8C) to disengage from notch 150 of the locking pin 134 tothereby facilitate disengagement from the mounting unit 130 or from abrake-disk, respectively.

As can further be noted in FIG. 8A, the footpeg 120 is formed with apivotable cover unit 172 fitted for covering the keyhole 174 of thelocking mechanism 160, to thereby prevent dirt, e.g. mud, water, etc.from entering the locking mechanism.

Furthermore, the footpeg 120 is formed with a gliding grove 178, whichfacilitates easy location of the keyhole 174 by mealy sliding the key164 over the grove 178, directing the key 164 into the keyhole 174. Thisarrangement is useful for fast insertion of the key into the keyholealso at extreme conditions e.g. at poor visibility, wearing gloves, etc.Still, the arrangement is such that sliding the key 164 over the glidinggrove 178, entails displacement of the cover unit 172 into its openpositing.

It is apparent that a motorcycle may be fitted with two or more lockingarrangements according to the invention where, for example, one lock isfitted for locking engagement with the front disk-brake (either byembracing or as a king-pin type lock) and an other lock is fitted forlocking engagement with the rear disk-brake (typically as a king-pintype lock). It is thus possible to increase the security level byproviding more than one locking mechanism and by simultaneous removalmore than one essential component from the motorcycle.

In addition to solving the problem of a motorcycle operatorinadvertently attempting to ride the motorcycle with a disk-brake lockengaged, the device of the present invention also solves the problem ofstoring and transporting the lock when not in use, since the lock istransported in the form of a footpeg.

The disk-brake lock/footpeg of the present invention therefore providesan effective method for efficiently and conveniently transporting adisk-brake lock, while also preventing damage to the motorcycle and theoperator by neglecting to remove the disk-brake lock before commencingoperation of the motorcycle.

According to other modifications of the invention the mounting unitcomprises a discreet connector for connecting only to a designatedmating coupler of the component. Such a discreet connection may beobtained, for example, by forming the mounting unit in the form of a pinhaving a polygonal cross section or an abnormal cross section, where themating portion of the locking mechanism of the lock component has areceptacle formed with a corresponding cross section.

By a further embodiment, the locking member may constitute part of anelectronic immobilizing system, such that, for example, the ignitionsystem of the motorcycle will not ignite at the absence of the lockingcomponent (e.g. footpeg or hand-grip) from its functional locationattached to the motorcycle. Evermore so, the arrangement may be suchthat an attempt to ignite the motorcycle before attaching the lockingmember to its functional location, may trigger an alarm signal such asan audible signal, etc.

Whilst several embodiments have been shown and described, it is to beunderstood that it is not intended thereby to limit the disclosure, butrather it is intended to cover all embodiments, modifications andarrangements falling within the spirit and the scope of the presentinvention, as defined in the appended claims, mutatis mutandis.

1. A lock for a motorcycle, which lock is a functional component foroperating the motorcycle; said component comprising a locking mechanismfor detachable locking to a mounting unit of the motorcycle forperforming its function, and for locking engagement to a disk-brake ofthe motorcycle.
 2. A lock according to claim 1, wherein the component isfunctional as a footpeg of the motorcycle.
 3. A lock according to claim1, wherein the component is functional as a hand-grip of the motorcycle.4. A lock according to claim 1, wherein the component is functional as agear-shift paddle of the motorcycle.
 5. A lock according to claim 1,wherein the component comprises a U-like shaped portion with adisk-receiving slot formed between arms of the component for embracing aportion of the disk-brake of the motorcycle.
 6. A lock according toclaim 5, wherein the disk-receiving slot extends between two parallelwalls of the arms.
 7. A lock according to claim 1, wherein the componentcomprises a rigid metal core formed or coated with an anti-slip surface.8. A lock according to claim 1, wherein the locking mechanism is apin-type lock adapted for locking engagement with the mounting unit andfor locking engagement with an aperture formed in the disk-brake.
 9. Alock according to claim 8, wherein the functional component serves asone of a hand-grip, a footpeg and a gear paddle.
 10. A lock according toclaim 1, wherein a gear shifting mechanism of the motorcycle comprises afootpeg and a gear paddle, both of which being detachable functionalcomponents suited for locking engagement with a disk-brake of themotorcycle.
 11. A lock according to claim 1, wherein the componentaccommodates an alarm system for generating an audible alarm signal uponattempting to move the motorcycle when the component is lockinglyengaged with the disk-brake.
 12. A lock according to claim 1, whereinthe component comprises an electronic immobilizer cooperating inconjunction with the mounting unit, to thereby dysfunction an ignitionsystem of the motorcycle whenever the component is detached from themounting unit.
 13. A lock according to claim 11, wherein an attempt toignite the motorcycle prior to attaching the component to the matingmounting unit, generates an alarm signal.
 14. A lock according to claim1, wherein the mounting unit comprises a discreet connector forconnecting only to a designated mating coupler of the component.
 15. Adisk-brake lock for a motorcycle, which lock is a functional componentof the motorcycle, such that it is unlikely to start and roll themotorcycle before disengaging the lock from the disk-brake andreengaging it at another location of the motorcycle for performing itsfunction essential for starting or driving the motorcycle.
 16. A lockaccording to claim 1, wherein the functional component may beretro-fitted to the motorcycle.
 17. A lock according to claim 1, whereinthe mounting unit may be retro-fitted to the motorcycle.
 18. A lockaccording to claim 1, wherein a key-hole of the locking mechanism isfitted with a cover.
 19. A lock according to claim 1, wherein a key-holeof the locking mechanism extends within a guide-track to facilitateguiding a key into said key-hole.
 20. A lock according to claim 1,wherein the locking mechanism comprises a retractable locking pin whichwhile serving as a functional component functions as a coupling hinge.21. A lock according to claim 1, wherein the component is a footrestfitted at a bottom face thereof with a ground-engaging probe.
 22. Amounting unit for a motorcycle lock being fixedly attachable to a frameof the motorcycle and comprises a connecting portion for lockinglyattaching thereto a locking mechanism of a functional component of themotorcycle, and where said locking mechanism serves also for lockingengagement of the lock to a disk-brake of the motorcycle.
 23. Amotorcycle fitted with a lock, which lock is a functional component foroperating the motorcycle; said component comprising a locking mechanismfor detachable locking to a mounting unit of the motorcycle forperforming its function, and for locking engagement to a disk-brake ofthe motorcycle.